Creamy Mushroom Julienne – Vegetarian Russian-French Classic in Cocottes
A vegetarian option on the beloved classic, Mushroom Julienne is packed with the earthy depth of mushrooms wrapped in a tangy sour cream béchamel. Finished with a golden crust of bubbling cheese, it’s a dish that feels both festive and comforting. Don’t let the French name fool you—this recipe is simple, forgiving, and wonderfully versatile for both everyday dinners and elegant entertaining.
Menu Suggestion: Make It a Meal
Turn this creamy Mushroom Julienne into a star at your next mushroom focused dinner party:
Table of Contents
Why You’ll Love This Recipe
Essential Grocery List and Ingredient Notes
Time Commitment and Prep Tools
Estimated time
Bake in a 350°F (180°C) preheated oven.
Special tools you’ll need
Julienne Recipe Steps at a Glance
Step-by-step: How to make Mushroom Julienne
Step 1: Finely dice the onion (Pic. 1).
Slice the button mushrooms (Pic.2)
I also like to use an onion chopper that gives me uniformed 1/2 inch pieces.
Step 2: In a large skillet over medium heat, melt the butter. Add the diced onion and cook for 3–4 minutes until soft and translucent (Pic. 3)
Add the mushrooms and season generously with salt and pepper. The mushrooms will release quite a bit of moisture.
Continue cooking for 10–12 minutes, stirring occasionally, until most of the liquid evaporates and the mushrooms are slightly golden.
Step 3: In a dry medium saucepan over medium heat, toast the flour for 2–3 minutes, stirring constantly, until it turns a light almond color. This step removes the raw flour taste and adds a subtle nuttiness.
Add the butter to the toasted flour and stir vigorously until the flour fully combines with the butter, creating a smooth, golden paste (Pic. 5).
Slowly pour in the milk in a steady stream (Pic. 6), whisking constantly to prevent lumps from forming. The sauce will begin to thicken after 3–5 minutes of continuous whisking.
Step 4: Once the sauce has thickened to coat the back of a spoon, stir in the sour cream or heavy cream (Pic. 7).
Season with salt, white pepper, and a pinch of nutmeg.
Continue whisking (Pic. 8) until you see the first bubbles breaking the surface indicating the sauce is fully cooked.
Step 5: Mix ⅔ of the sauce with the sautéed mushroom mixture (Pic. 9).
Continue stirring until everything is well coated and creamy (Pic. 10).
Step 6: Preheat the oven to 350°F (180°C)
Divide the mushroom mixture evenly among the prepared dishes, filling them about ¾ full (Pic. 11).
Spoon the reserved béchamel sauce over the top of each portion (Pic. 12), creating a smooth layer. Generously sprinkle grated cheese over each dish.
Place in the oven and bake for 20 minutes or until the top is bubbly and slightly golden
Best Ways to Serve Vegetarian Mushroom Julienne
Presentation Ideas:
Perfect Pairings:
Serving Tips:
Tips and Wisdom from Cafe Osharak
Frequently Asked Questions
Can I make this in one large dish instead of individual portions?
Definitely! Use a 9×13-inch baking dish or cast-iron skillet. Increase the baking time to 25–30 minutes to ensure the center is hot and bubbly. The family-style presentation is just as delicious and much easier for casual gatherings.
Can I freeze Mushroom Julienne?
For best results, freeze the mushroom filling and béchamel sauce separately before assembling. Thaw overnight in the refrigerator, then assemble and bake fresh. Freezing the assembled dish can cause the sauce to separate slightly upon reheating, though it will still taste delicious.
Can I add other vegetables to this recipe?
Absolutely! Leeks pair well with mushrooms. Thinly julienned carrots will add some color. Small cauliflower florets work beautifully. Just make sure to cook them until any excess moisture evaporates before mixing with the sauce.
Is julienne an appetizer or main course?
It’s beautifully versatile! Serve it as an elegant appetizer in small half-cup (4 oz) ramekins, or as a satisfying light main course in larger cup-size (8 oz) cocottes. Pair the main course version with a fresh salad and crusty bread for a complete vegetarian meal.
More Recipes to Try from Cafe Osharak
If this recipe hit the spot, be sure to explore Chicken Kiev, Farro Pilaf with Chicken; each one is a family favorite that I can’t wait for you to try! Let me know how they turn out for you!
If you enjoyed this recipe, please leave a 🌟 star rating and let me know how it turned out in the 📝 comments. I appreciate your support!
Creamy Mushroom Julienne
Ingredients
- 500 g mushrooms: button or cremini sliced
- 100 g onions finely diced
- 100 g cheese cheddar or Emmental grated
- 300 g cream 15–25% fat or sour cream
- 2 tablespoons flour
- 50 g butter
- 1 cup milk
- 1 teaspoon Salt & pepper to taste
- 2 tablespoons Butter or Vegetable oil for sautéing
Instructions
Prepare the filling
- Heat a skillet with a tablespoon of butter
- Sauté onions in butter until soft and translucent.
- Add mushrooms, season with salt and pepper, and cook until their liquid evaporates.
- Set aside.
Make the sauce
- In a saucepan, toast the flour gently until slightly golden.
- Stir in butter to form a roux.
- Gradually whisk in milk until smooth and thickened.
- Stir in cream or sour cream. Season with salt and pepper.
Assemble the dish
- Preheat oven to 350°F (180°C).
- Butter individual cocottes or a baking dish.
- Mix most of the sauce with the mushroom mixture.
- Portion into dishes, spoon extra sauce on top, and sprinkle with grated cheese.
Bake & serve
- Bake for 20 minutes until the cheese is melted and golden.
- Serve hot with crusty bread or a fresh salad.
Notes
- Make ahead: Prep filling and sauce up to 24 hours in advance; assemble and bake when ready
- Storage: Refrigerate assembled julienne for up to 2 days; reheat in the oven at 350°F
- Freezing: Freeze filling and sauce separately for up to 3 months; thaw and assemble fresh
- Substitutions: Use cornstarch for gluten-free; plant-based alternatives for vegan
- Variations: Add cooked shrimp, ham, or keep purely vegetarian
- Presentation: Serve in bread bowls, puff pastry shells, or a single large dish
